S peters co



(No Model.) 2 Sheets-Sheet 1.

S E. H. GOODMAN.

SIGNAL. 4 No. 534,826. Patented Feb. 26, 1895.

FIG.'7.

WITNESSES: INVENTOR ATTORNEY (No Model.) 2 Sheets-Sheet 2.

E. H. GOODMAN.

SIGNAL.

. No. 534,826. Patented Feb. 26,1895.

1 illlll 11mm 1 I ATTURIN EY NITED STATES EDWVARD H. GOODMAN, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO THE UNION SWITCH AND SIGNAL OOMPANY OF SAME PLACE.

SIGNAL.

SPECIFICATION forming part of Letters Patent No. 534,826, dated February 26, 1895.

Application filed October 25, 18 94. Serial No. 526,938- (No model.)

To all whom it may concern: rear side of the blade in line with the slots. Be it known that I, EDWARD H. GOODMAN, The supports or sockets for the lamps are a citizen of the United States, residing at preferably secured on blocks 6, projecting Pittsburg, in the county of Allegheny and from the blade, so that the lamp will be held 55 r 5 State of Pennsylvania, have invented or disat such a distance from the blade that all but covered certain new and useful Improvements substantially parallel rays will be cut off and in Signals, of which improvcmentsthe followprevented from passing through the slots. ing is a specification. When using electric lamps, the sockets form Theinvention described herein relates to one of the terminals for the light circuit, the 60 certain improvements in illuminated semaother terminals being formed by arms 6, prophore or position signals, and has for its obvided with clamping fingers 7, to grasp the ject the arrangement of two lamps or series of pin 7, which forms one of the terminals of the lamps or illuminating devices on the blade of lamp conductors. Other means for connectthe signal, one of the lamps or series of lamps ing the light circuits with the terminals of 6 being adapted to be darkened and the other the lamp conductors may be employed, such lamp or series illuminated, when the blade is beams varying the construction of lamp. in one position, 6. g., at danger, while the see As the lamps will be subjected to severe ond lamp or series is darkened and the first jars on account of the sudden movements and lamp or series is illuminated, when the blade stoppages of the signal blade, auxiliary sup- 7o is in another position, e. g., at safety. ports for the globes are provided, said sup- To this end the invention consists, in genports consisting of a spring clamp 8, grasping eral terms, in the construction and combinathe free ends of the globes and provided with x tion, substantially as hereinafter described arms 9, whereby the clamps are secured to the and claimed. signal blade. The clamps are connected to 25 In the accompanying drawings forming a their arms by a resilient joint or coupling 10, part of this specification, Figure 1 is a front preferably formed by one or more coils of the elevation of my improved signal. Fig. 2 is a wire of which the clamps and arms are formed, rear elevation of the same. Fig. 3 is a top thereby permitting of the shifting of the plan view. Fig. 4 is a rear elevation of a porclamps to the position shown in dotted lines 0 tion of the signal blade, on an enlarged scale, in Fig. 5, for the removal and replacement of the protecting and isolating hoods being relamps. moved. Fig. 5 is a sectional view, the plane In order that the signal may give the deof section being indicated by the line w, w, sired indication at night by color as well as po- Fig. 4. Fig. 6 is a transverse section, on an sition, suitable means are provided whereby 3 5 enlarged scale, the plane of section being ina red or other colored light is shown when the dicated by line y, 11 Figs. 1 and 2, and Fig. 7 signal is at danger, and a white or suitably is a diagrammatic view. colored light is shown when the signal is at In the practice of my invention, the signal safety. This change maybe effected by makmay be of any desired or suitable form or coning the globes of lamps a, c and e, forming one o struction and the blade or indicating portion series of red or other colored glass, and the shifted in any suitable manner. For convenglobes of lamps b, d andfof white glass, and ience I have shown my invention applied to by providing suitable means whereby the a semaphore blade 1, pivotally mounted on a lamps of the danger series are extinguished post 2, and designed to be shifted by any suitor veiled when the signal is at safety and the 9 5 5 able form of mechanism. Through the blade lighting up or unveiling of the safety series, is formed a series of openings 3, preferably and vice versa when the signal is shifted to oblong in shape, so that light escaping theredanger. through will have bar-like appearance, which When using electric lamps the change from will be enhanced by contiguous slots or openone color to another with the change of signal too 50 ings. A series of lamps 4, preferably of the can be effected by arranging the danger se incandescentelectric type, are arranged on the ries of lamps in one circuit and the safety series in another circuit, and providing a suitable switch controlled-by the signal or the signal controlling or operating mechanism for alternately opening and closing said circuits. As shown in the diagram Fig.7, all of the lamps have one terminal connected to a common wire 11. The other terminals of the danger series are connected to a wire 12, and those of the safety series to a wire 13. As shown in Figs. 1 and 7, the Wires 12 and 13 are connected to a switch mechanism 14:, operated simultaneously with the signal blade, and constructed to close the circuit of the danger series and open that of the safety series, as the signal is shifted from safety to danger, and vice Versa. This switch mechanism may be constructed and operated in any suitable or desired manner, 2'. e.,-in the form of a commutator arranged on the pivot pin of the signal, or in the form shown in Fig. 1, consisting of a roller 15, having contact strips thereon and contact springs 16 adapted to bear upon the strips when the roller is rotated and connected to the wires 12 and 13. It is preferred to arrange the lamps in the circuit inmultiple are rather than in series, so that the failure of one of the lamps will not affect the other lamps on the signal.

In lieu of using lamps having colored globes,:the slots or openingsin the signal blade may be covered with glass, as at 17, those in line with the danger series of lamps with red glass and those of the safety series with white glass, in which case ordinary lamps may be used.

In order to prevent the light from the safety series of lamps from shining throughor illuminating the colored glass coveringof the slots of thedanger series, and vice'versa, hoods 18 are arranged over the lamps so as to isolate them, as shown in Figs. 3 and 7. These hoods are preferably formed of metal and have their inner concave surfaces polished so as to serve as reflectors projecting the rays of light out through the slots.

It is preferred to protect the lamps and parts connected thereto by means of a boxlike cap or cover 19, detachably secured to the back of the signal blade, as shown in Figs. 3 and 6.

I claim herein as my invention- 1. The combination of a movable signal blade, two series of electric lamps mounted on the movable bladeand having different colored globes, said series being arranged in independent circuits, and means operative on a change in position of the signal for closing one circuit and opening the other circuit, substantially as set forth.

2. The combination of a movable signal blade, two series of electric lamps mounted on the movable blade andarranged to display different colored lights said series being arranged in independent circuits and means operative on a change in position of the signal for closing one circuit and opening the other circuit, substantially as set forth.

In testimony .whereof I have hereunto set my hand.

EDWARD H. GOODMAN.

Witnesses:

DARWIN S. WoLooTT, F. E. GAITHER. 

